Which unique characteristics of the Data Center Aggregation layer must be considered by an EnterpriseCampus designer?

Layer 3 routing between the Access and Aggregation layers facilitates the ability to span VLANs acrossmultiple access switches, which is a requirement for many server virtualization and clusteringtechnologies.

Virtualization tools allow a cost effective approach for redundancy in the network design by using two orfour VDCs from the same physical switch.

"East-west" server-to-server traffic can travel between aggregation modules by way of the core, butbackup and replication traffic typically remains within an aggregation module.

Load balancing, firewall services, and other network services are commonly integrated by the use ofservice modules that are inserted in the aggregation switches.

Support of vPC on the Cisco Nexus 5000 access switch enables various new design op...